Make list of explicit driver libraries opt-in

Instead of always injecting the list of explict libraries, we
switch these to opt-in instead. This means that they can be
generated in use cases such as GKE where they are expected,
but don't affect other use cases where they are not.

Signed-off-by: Evan Lezar <elezar@nvidia.com>

Author: elezar

pkg/nvcdi/api.go

@@ -77,6 +77,9 @@ const (
 type FeatureFlag string
 
 const (
+	// FeatureEnableExplicitDriverLibraries enables the inclusion of a list of
+	// explicit driver libraries.
+	FeatureEnableExplicitDriverLibraries = FeatureFlag("enable-explicit-driver-libraries")
 	// FeatureDisableNvsandboxUtils disables the use of nvsandboxutils when
 	// querying devices.
 	FeatureDisableNvsandboxUtils = FeatureFlag("disable-nvsandbox-utils")

pkg/nvcdi/driver-nvml.go

@@ -145,6 +145,10 @@ func (l *nvcdilib) getVersionSuffixDriverLibraryMounts(version string) (discover
 }
 
 func (l *nvcdilib) getExplicitDriverLibraryMounts() (discover.Discover, error) {
+	if !l.featureFlags[FeatureEnableExplicitDriverLibraries] {
+		return nil, nil
+	}
+
 	// List of explicit libraries to locate
 	// TODO(ArangoGutierrez): we should load the version of the libraries from
 	// the sandboxutils-filelist or have a way to allow users to specify the